Title :
A compact rail-to-rail output stage for CMOS operational amplifiers
Author :
Sekerkiran, Barbaros
Author_Institution :
ETA ASIC Design Center, Istanbul Tech. Univ., Turkey
fDate :
1/1/1999 12:00:00 AM
Abstract :
This paper presents a CMOS output stage devised for driving heavy resistive loads. An operational amplifier of this type has been fabricated in a 3 μm double-polysilicon CMOS technology. With a supply voltage of ∓5 V and load of 470 Ω, the amplifier has a ∓4.6-V output swing and features a 60 mA short-circuit output current. Although simple, the proposed configuration enables the output transistors to be driven efficiently
Keywords :
CMOS analogue integrated circuits; circuit stability; operational amplifiers; -4.6 to 4.6 V; -5 V; 3 micron; 5 V; 60 mA; CMOS operational amplifiers; Si; compact rail-to-rail output stage; double-polysilicon CMOS technology; heavy resistive loads; op amp output stage; quiescent current stabilisation circuit; CMOS analog integrated circuits; CMOS technology; Current control; Integrated circuit technology; Operational amplifiers; Rail to rail amplifiers; Rail to rail outputs; Threshold voltage; Transconductance; Voltage control;
Journal_Title :
Solid-State Circuits, IEEE Journal of
